diff --git a/index.test.js b/index.test.js
index d297855..4fcc96b 100644
--- a/index.test.js
+++ b/index.test.js
@@ -19,30 +19,35 @@ test('gets repository owner', () => {
       .toEqual('FranzDiebold');
 });
 
-test('gets repository owner for empty GITHUB_REPOSITORY', () => {
+test('gets repository owner for empty repository', () => {
   expect(getRepositoryOwner(undefined)).toBeFalsy();
 });
 
-test('gets repository name', () => {
+test('gets repository name from repository', () => {
   expect(getRepositoryName('FranzDiebold/github-env-vars-action'))
       .toEqual('github-env-vars-action');
 });
 
-test('gets repository name for empty GITHUB_REPOSITORY', () => {
+test('gets repository name for empty repository', () => {
   expect(getRepositoryName(undefined)).toBeFalsy();
 });
 
-test('gets ref from simple ref name', () => {
+test('gets ref name from simple ref', () => {
   expect(getRefName('refs/heads/feature-branch-1'))
       .toEqual('feature-branch-1');
 });
 
-test('gets ref from complex ref name', () => {
+test('gets ref name from tag', () => {
+  expect(getRefName('refs/tags/v1.3.7'))
+      .toEqual('v1.3.7');
+});
+
+test('gets ref name from complex ref', () => {
   expect(getRefName('refs/heads/feat/feature-branch-1'))
       .toEqual('feat/feature-branch-1');
 });
 
-test('gets repository name for empty GITHUB_REF_NAME', () => {
+test('gets ref name for empty ref', () => {
   expect(getRefName(undefined)).toBeFalsy();
 });
 
@@ -51,6 +56,6 @@ test('gets short SHA', () => {
       .toEqual('ffac537e');
 });
 
-test('gets short SHA for empty GITHUB_SHA', () => {
+test('gets short SHA for empty SHA', () => {
   expect(getShaShort(undefined)).toBeFalsy();
 });